The Grantham Foundation

Renewable Metals is a company that specializes in recycling end-of-life batteries. It employs a proprietary process to recover nearly all the lithium, nickel, cobalt, copper, and manganese from these batteries, ensuring minimal waste. This service enables clients to produce new batteries using recycled materials, thereby reducing waste and promoting sustainability.

Travertine is a company focused on carbon dioxide removal and industrial chemical production, aiming to mitigate the environmental impact associated with the extraction of elements for renewable energy. The company employs a proprietary electrochemical process that transforms carbon dioxide from the atmosphere into stable carbonate minerals, effectively storing carbon permanently. In addition to carbon capture, this process generates sulfuric acid, which is utilized in critical element extraction and fertilizer production. By recycling sulfate waste to produce sulfuric acid and minimizing chemical waste, Travertine supports more sustainable practices in the mining and fertilizer industries while generating high-quality carbon credits through its direct air capture and mineralization efforts.

Arca is a leading carbon dioxide removal (CDR) company. Arca accelerates natural process of carbon mineralization, by reacting atmospheric carbon dioxide with ultramafic mine tailings rich in magnesium silicate minerals, such as serpentine and brucite. By leveraging partnerships with mining companies, Arca transforms mine waste into a carbon sink, permanently storing CO₂ as stable carbonate minerals. The company is at the forefront of scaling carbon dioxide removal (CDR) solutions by integrating geochemical expertise, real-time monitoring, and verification methodologies. Arca collaborates with major buyers of carbon removal credits, such as Shopify, Stripe, Watershed and MaRS, and has established formal methodologies for recognizing and quantifying mineralization in voluntary and compliance carbon markets.

Renewable Metals is a company that specializes in recycling end-of-life batteries. It employs a proprietary process to recover nearly all the lithium, nickel, cobalt, copper, and manganese from these batteries, ensuring minimal waste. This service enables clients to produce new batteries using recycled materials, thereby reducing waste and promoting sustainability.

Eden is focused on developing a sustainable platform for natural resource recovery, aiming to create a carbon-neutral future. The company has introduced a novel method known as Pulsed Electrical Well Stimulation (PEWS), which is a patent-pending technology designed to replace traditional hydraulic fracturing. This innovative approach eliminates the need for water injection and addresses the logistical challenges and environmental risks associated with conventional fracking methods. By utilizing high-voltage electricity and proprietary modeling techniques, Eden enhances rock permeability with precision, facilitating effective resource extraction across various geological settings. This technology not only reduces costs but also minimizes the negative impacts typically associated with hydraulic fracturing, positioning Eden as a leader in environmentally responsible resource recovery.

Arca is a leading carbon dioxide removal (CDR) company. Arca accelerates natural process of carbon mineralization, by reacting atmospheric carbon dioxide with ultramafic mine tailings rich in magnesium silicate minerals, such as serpentine and brucite. By leveraging partnerships with mining companies, Arca transforms mine waste into a carbon sink, permanently storing CO₂ as stable carbonate minerals. The company is at the forefront of scaling carbon dioxide removal (CDR) solutions by integrating geochemical expertise, real-time monitoring, and verification methodologies. Arca collaborates with major buyers of carbon removal credits, such as Shopify, Stripe, Watershed and MaRS, and has established formal methodologies for recognizing and quantifying mineralization in voluntary and compliance carbon markets.

Summit Nanotech Corporation is a cleantech company based in Calgary, Canada, that specializes in innovative lithium extraction methods aimed at supporting the global energy transition. Founded in 2018, the company has developed a patented direct lithium extraction (DLE) technology that offers a more sustainable and environmentally friendly approach compared to traditional extraction methods. By collaborating with mining companies and lithium asset owners in Chile and Argentina, Summit Nanotech aims to conserve natural resources while optimizing lithium production operations. Its focus on providing cost-effective solutions positions Summit Nanotech as a key player in the lithium supply chain, addressing industry challenges while minimizing environmental impact.

Travertine is a company focused on carbon dioxide removal and industrial chemical production, aiming to mitigate the environmental impact associated with the extraction of elements for renewable energy. The company employs a proprietary electrochemical process that transforms carbon dioxide from the atmosphere into stable carbonate minerals, effectively storing carbon permanently. In addition to carbon capture, this process generates sulfuric acid, which is utilized in critical element extraction and fertilizer production. By recycling sulfate waste to produce sulfuric acid and minimizing chemical waste, Travertine supports more sustainable practices in the mining and fertilizer industries while generating high-quality carbon credits through its direct air capture and mineralization efforts.

Arca is a leading carbon dioxide removal (CDR) company. Arca accelerates natural process of carbon mineralization, by reacting atmospheric carbon dioxide with ultramafic mine tailings rich in magnesium silicate minerals, such as serpentine and brucite. By leveraging partnerships with mining companies, Arca transforms mine waste into a carbon sink, permanently storing CO₂ as stable carbonate minerals. The company is at the forefront of scaling carbon dioxide removal (CDR) solutions by integrating geochemical expertise, real-time monitoring, and verification methodologies. Arca collaborates with major buyers of carbon removal credits, such as Shopify, Stripe, Watershed and MaRS, and has established formal methodologies for recognizing and quantifying mineralization in voluntary and compliance carbon markets.

Lilac Solutions, Inc. is a mining technology company focused on lithium extraction, providing innovative technology and services to lithium producers. The company specializes in ion exchange beads and continuous brine processing systems, which enable the efficient production of high-purity lithium solutions from various brine resources. This technology, grounded in ion-exchange theory, allows lithium producers to enhance project development, improve lithium recovery rates, and optimize operational efficiency while also minimizing costs and environmental impact. Lilac Solutions serves industries such as electric vehicles and renewable energy storage. Incorporated in 2015, the company is headquartered in Oakland, California.